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Diffstat (limited to 'benchmarks/ArrayCopyBenchmark.java')
-rw-r--r-- | benchmarks/ArrayCopyBenchmark.java | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/benchmarks/ArrayCopyBenchmark.java b/benchmarks/ArrayCopyBenchmark.java new file mode 100644 index 0000000..75ad243 --- /dev/null +++ b/benchmarks/ArrayCopyBenchmark.java @@ -0,0 +1,57 @@ +/* + * Copyright (C) 2010 Google Inc. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package benchmarks; + +import com.google.caliper.Param; +import com.google.caliper.Runner; +import com.google.caliper.SimpleBenchmark; + +import java.util.Arrays; + +public class ArrayCopyBenchmark extends SimpleBenchmark { + public void timeManualArrayCopy(int reps) { + char[] src = new char[8192]; + for (int rep = 0; rep < reps; ++rep) { + char[] dst = new char[8192]; + for (int i = 0; i < 8192; ++i) { + dst[i] = src[i]; + } + } + } + + public void time_System_arrayCopy(int reps) { + char[] src = new char[8192]; + for (int rep = 0; rep < reps; ++rep) { + char[] dst = new char[8192]; + System.arraycopy(src, 0, dst, 0, 8192); + } + } + + public void time_Arrays_copyOf(int reps) { + char[] src = new char[8192]; + for (int rep = 0; rep < reps; ++rep) { + char[] dst = Arrays.copyOf(src, 8192); + } + } + + public void time_Arrays_copyOfRange(int reps) { + char[] src = new char[8192]; + for (int rep = 0; rep < reps; ++rep) { + char[] dst = Arrays.copyOfRange(src, 0, 8192); + } + } +} |